The LD soundtrack would be dicey, if my experience with Grease is any indication. Neither film got a digital sound remaster, and they were released very early in the format without CX noise reduction. What I got off the LD sounded very mediocre.

I fared better with a mid 90's VHS tape, although I had to do it twice to cover some tracking errors. A Beta Hi Fi tape might yield better results as I seldom have audio dropout issues.

IIRC, there was an expanded Limited Edition CD soundtrack release this past year.